Heating-furnace.



No. 696,607; Patanted Man 1, I902.

M. M. SUPPES & R. CBOOKER, In.

HEATING FURNACE.

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No. 696,607. Patented Apr. I, I902.

M. M. SUPPES & R. BROOKER, .Ifl.

HEATING FURNACE.

( a lication filed Apr. 4. 1901.

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No. 696,607. Patented Apr. l, 5902. M. M. SUPPES ii R. CRDUKER, 1R.HEATING FURNACE.

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No. 696,607. Patented Apr. I, I902. M. M. SUPPES & R. CRUUKER, In.

HEATING FURNACE. (A umimi filed Apr. 4, 1901.

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MAXllllllllAN M. SUPPES AND RALPH CROOKER, JR., OFELYRIA, OIIIO.

HEATING FURNI-XCE.

SPECIFICATION forming part of Letters Patent No. 696,607, dated April 1,1902-.

Application filed April t, 1901. Serial No. 541264. (No model.)

To all whom, it may concern:

Be it known that we, BIAXIMILIAN M. SUrPEs and RALPH CROOKER, Jr., ofElyria, in the county of Lorain and State of Ohio, have invented a newand useful Improvement in Heating-Furnaces, of which the following is afull, clear, and exact description, reference being had to theaccompanying drawings, which form a part of this specification.

Our invention relates to furnaces for heating blooms, billets, ingots,&c., preparatory to rolling, and more particularly to what are commonlyknown as continuous furnaces, in which the blooms or other pieces beingheated lie in a continuous row between the charging and delivery end ofthe furnace upon a suitable bed or hearth, along which they are moved bymechanical means, the introduction of successive blooms at the chargingand cansing the entire row to be advanced along said bed in thedirection of the delivery end, where they are successively withdrawn.

The bed along which the blooms or other pieces are moved in the mannerabove described is usually formed by a number of water-cooled pipes,which act as skids or slides for the pieces, and those portions of theblooms which are in contact with such pipes are not heated uniformlywith the rest of the billet, but are chilled or spotted to such anextent as to make them practically useless, except for a few specialpurposes. It has therefore been customary to provide at the end of thebed a finishing-hearth, onto which the pieces are pushed from the pipesand allowed to remain for a short time until uniformly heated. Asheretofore constructed the finishing-hearth has been located at the endof the water-pipes, the continued movement of the blooms causing them tofall onto this hearth. Being highly heated, there is a constant tendencyfor the blooms to stick and weld together, and to prevent this they aremanually manipulated and separated by means of suitable implementsinserted through side doors of the furnace. This is a feasible andfairly successful practice with billets and other comparatively lightpieces 5 but it is practically impossible to sufficiently manipulateheavy blooms andingots in this manner to prevent their sticking andWelding, and the treatment of such pieces in this type of furnace hasheretofore presented a serious problem.

Our invention is designed to overcome the difficulties thus brieflystated and to provide means whereby the heating of blooms, ingots, 85c.may be thoroughly equalized before they are taken to the rolls and atthe same time may be readily kept from sticking and welding. We attainthis object mainly by changing the location of the finishing-hearth fromits old position at the end of the bed to a position at one sidethereof, the blooms or other pieces being successively transferred fromthe bed to the hearth by an endwise movement or movement in a directionsubstantially at right angles to the line of their movement on the saidbed. By this change in the location of the finishing-hearth we areenabled to transfer the blooms thereto without their sticking andwelding together, while at the same time we retain to the full extentthe equalizing effect of the hearth.

Our inventiom therefore, broadly considered, consists in thecombination, with a preheating furnace or chamber along which the bloomsor other pieces are moved, of a laterally-situated finishing-hearth towhich the blooms may be transferred by lateral or endwise movement. Thefinishing-hearth may be, and we prefer that it shall be, a part of thesame furnace as the preheating-chamber, or it may be contained in aseparate furnace connected with the preheating furnace or chamber by apassage through which the blooms are transferred.

Our invention also consists in the novel construction, arrangement, andcombination of parts,all as hereinafter described, and pointed out inthe appended claims.

The invention is alsoin its broadest sense independent of any particulartype or construction of furnace and is therefore not limited to theparticular type and construction shown in the accompanying drawings forpurposes of illustration.

In these drawings, Figure 1 is a sectional plan view of a furnaceembodying our invention; Fig. 2, a longitudinal Vertical section on theline2 2 of Fig. 1; Fig. 3, a transverse vertical section on the line 3 3of Fig. 1; Fig. 4, a longitudinal vertical section on the line 4 t ofFig. 1, and Fig. 5 a sectional plan view showing a modification.

The letter A designates the preheatingchamber,having the inclined bed orhearth A, upon which are supported a number of longitudinally-extendingwater-pipes 0.. These pipes extend the full length of said chamber andthrough the end walls of the furnace, their lower ends being connectedto the transverse header b of a' water-supply system and their upperends to the header b of a discharge system.

B is the charging-door at the upper end of the furnace, and C indicateshydraulic charging apparatus of well-known character.

0 represents the usual side doors giving access to the chamber A.

D is the finishing-hearth,which,as is clearly shown, is placed laterallyof the lower end of the preheating-chamber and extends at right anglesthereto.

E E are two fire-chambers situated on opposite sides of the hearth.Although we have shown these chambers as having grates E for coal orother solid fuel, this is entirely immaterial to our invention, asgas-or oil may be used.

c wherever seen indicates a draft-chamber, and e indicates deliverylines or passages leading from said chambers into the furnace. Thisarrangement of draft-chambers and fines is designed to provide for ahigh degree of combustion over the finishing-hearth D. The products ofcombustion pass from the hearthchamber into the preheating-chamber andover the bed or hearth A to the upper end of said chamber, thendownwardly through the flue F to the passage G underneath the hearth A,thence to the stack-passage H.

The hearth-chamber is provided with the delivery-door I, and directlyopposite the finishing-hearth and door I the furnace has a door K, whichmay be opened to permit the operation of a hydraulic plunger L, by meansof which the blooms may be pushed endwise and laterally off from thepipes at onto the hearth D. The cylinder L, in which the plunger works,is mounted on a longitudinally-movable carriage or bed L whereby theplunger may be moved to a position op-. posite to any desired portion ofthe finishinghearth.

It will be readily seen that the blooms may be successively transferredfrom the preheating-chamber and water-pipes to the finishingchamber in amanner which will keep them separated from each other and with verylittle difficulty.

Instead of the hydraulic plunger shown any other suitable means may beemployed.

The construction shown in Fig. 5 difiers from that just described inthat the laterallyarranged finishing-hearth P is contained ina separatefurnace P, connected with the preheating-chamber by a passage 0, throughwhich the blooms are pushed by any suitable means.

As hereinbefore indicated, we do not wish to limitourselves to theparticular furnace and appurtenances herein shown and described, sincethe essential features of our invention as pointed out in the appendedclaims are capable of various embodiments.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. In a furnace for heating blooms or other pieces of metal, thecombination with a preheating chamber or hearth, and means whereby theblooms or other pieces may be moved along said hearth, of a finishingchamber orhearth situated laterally of the preheating chamberor hearth,and a connection between said chambers or hearths through which theblooms or other pieces may be transferred from the preheating to thefinishing chamber or hearth by lateral movement.

2. The combination with a preheating furnace or chamber for blooms andother pieces of metal, and means for advancing the blooms or otherpieces in contiguous succession through said furnace or chamber, of afinish ing-hearth situated to one side of the delivery end of saidfurnace or chamber, and means for transferring the blooms or pieces tosaid hearth by endwise movement.

3. In a furnace for heating blooms or other pieces of metal, thecombination with a pre heating bed or hearth, and means for moving theblooms or other pieces along said bed or hearth, of a finishing-hearthlocated to one side of the preheating chamber or hearth andcommunicating therewith, and means for transferring the blooms or otherpieces from the preheating bed or hearth to the finishinghearth by amovement thereof in a direction substantially at right angles to theirmove- -ment along the said bed.

4. In a heating-furnace of the class described, the combination with afurnace or chamber having an inclined bed of watercooled pipes extendingthe full length thereof, and means whereby the pieces to be heated maybe pushed along said bed, of a finishinghearth located to one side ofthe lower end portion of said bed and communicating therewith.

5. In a heating-furnace for blooms and the like, a preheating-chamberadapted to receive the blooms or other pieces transversely thereof, anda finishing-hearth extending at right angles thereto and communicatingtherewith.

6. In a heating furnace of the class described, a preheating-chamber andmeans for advancing the pieces to be heated in contiguous successionthrough said chamber, a finish ing-hearth communicating therewith and extending at right angles thereto, anda pushing device for transferringthe blooms from the chamber to the hearth by endwise movement.

7. In a heating furnace of the class described, the combination of apreheating chamber having therein a water-cooled bed and means foradvancing the pieces to be l1eated in contiguoussuccession along saidbed, a side door in said furnace opposite the lower portion of said bed,a finishing-hearth on the opposite side of the bed from the said doorand communicating with said chamber, and apushing device operativethrough said door and transversely across the said bed;

8. In a heating furnace of the class described, the combination of apreheatingchamber, having an inclined bed and means whereby the piecesto be heated may be moved along said bed, a side door in the furnaceopposite the said bed, a finishing-hearth on the opposite side of saidbed and in line with said door, a pushing device operative through thesaid door and transversely across the said bed, and meansfor effecting alongitudinal movement of said pushing device to position it opposite anydesired portion of the hearth.

9. In a heating furnace of the class described, the combination of apreheatingchamber, having an inclined bed and means for advancing thepieces to be heated in contiguous succession along said bed, afinishinghearth to one side of the lower end of said bed, andfire-chambers upon opposite sides of said hearth and communicatingtherewith and also with, the preheating-cham her.

10. In a heating-furnace of the class described, the combination of apreheatingchamber, means for advancing the pieces to be heated throughsaid chamber in contiguous succession, a finishing-hearth situatedlaterally of the delivery end of said chamber, a passage connecting thetwo, a side door in the furnace opposite the said passage, and a pushingdevice operative through the said door.

11. In a furnace for heating blooms and other pieces of metal,apreheating furnace or chamber having a transverse Width greater thanthe length of the pieces to be heated, means for advancing the piecesthrough said furnace or chamber,a finishing-hearth located to one sideof one end portion of said furnace or chamber andhaving the lengthgreater than the length of said pieces, and apassage connecting saidhearth with the said furnace or chamber.

In testimonywhereofwehave affixed our signatures in presence of twowitnesses.

MAXIMILIAN M. SUPPES. RALPH OROOKER, J R.

Witnesses:

W. B. N. HAWK, D. W. LAWRENCE.

